[R-390] Waking up my non-A

[KC8OPP Roger S.]

--- John Lawson <jpl15 at panix.com> wrote:
> 
>    I have the Manual on CDROM, which I need to get
> immersed in, but I 
> thought to ask the Gurus and Pundits if there is a
> 'condensed' set of 
> tests or procedures I might undertake in the
> meantime, to narrow this down 
> a bit?
>

John,

Not sure if I qualify to offer an answer, but at least
I can give my opinion.

Here is how I would go through the R-390.

Good visual, looking for bent, broke, smoked or burnt
things.

B+ in specs?

Audio section working Ok?

Fixed IF, test and align, fix as necessary.

PTO close to working, worry about endpoint and linear
adjustments later.

Variable IF's and crystal oscillators, check and
align.

Finally the RF deck repair and alignment.

When the radio is near working order and all of the
surgery is finished is the time to start the deep
cleaning and polishing.

Good luck and let us know how things are going.  I
have on the bench one of the most ugly 390A I have
ever seen, but having been rescued from the landfill
and now working I can start on the last step of
cleaning and polishing.

73's
Roger
KC8OPP


		
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